Matthew 17:11

And He answered and said, “Elijah is coming and will restore all things;

Luke 1:16-17

And he will turn many of the sons of Israel back to the Lord their God.

Malachi 4:6

He will restore the hearts of the fathers to their children and the hearts of the children to their fathers, so that I will not come and smite the land with a curse.”

Acts 3:21

whom heaven must receive until the period of restoration of all things about which God spoke by the mouth of His holy prophets from ancient time.

Luke 3:3-14

And he came into all the district around the Jordan, preaching a baptism of repentance for the forgiveness of sins;

Treasury of Scripture Knowledge

Summary

And Jesus answered and said unto them, Elias truly shall first come, and restore all things.

General references

Bible References

And restore

Malachi 4:6
He will restore the hearts of the fathers to their children and the hearts of the children to their fathers, so that I will not come and smite the land with a curse.”
Luke 1:16
And he will turn many of the sons of Israel back to the Lord their God.
Luke 3:3
And he came into all the district around the Jordan, preaching a baptism of repentance for the forgiveness of sins;
Acts 3:21
whom heaven must receive until the period of restoration of all things about which God spoke by the mouth of His holy prophets from ancient time.

General references

Mark 9:11
They asked Him, saying, “Why is it that the scribes say that Elijah must come first?”